ABSTRACT

Many studio owners and audiophiles install thin acoustic foam all over their walls,

mistakenly believing that is sufficient. After all, if you clap your hands in a room treated

entirely with foam (or fiberglass or moving blankets), you won’t hear any reverb or echoes.

But thin treatments do nothing to control low-frequency peaks, nulls, and ringing, and hand

claps won’t reveal that. So you might hear an absence of echoes and wrongly conclude the

acoustics in the room are good but miss that bass frequencies still bounce around untamed.

Basement studios and rooms with brick or concrete walls are especially prone to this